SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.unit_name 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    10061, 10063, 10064, 10074, 10076, 10077, 
    10080, 10081, 10082, 10083, 10084, 
    10085, 10086, 10087, 10088, 10090
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "product_id", "idx_product_lang"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "rows": 16,
      "filtered": 100,
      "index_condition": "cscart_product_descriptions.product_id in (10061,10063,10064,10074,10076,10077,10080,10081,10082,10083,10084,10085,10086,10087,10088,10090) and cscart_product_descriptions.lang_code = 'ru'"
    }
  }
}

Result

product_id short_description full_description unit_name
10061 Bracket Assembly - Head Up Display Support<p>Part number 84776T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10063 Cover assembly-crash pad main side, left<p>Part number 84780T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10064 Cover assembly-crash pad main side, right<p>Part number 84785T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10074 Connector Assy-Heater TO Air Vent Duct<p>Part number 97470T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10076 Nozzle-Defroster<p>Part number 97352T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10077 screw-machine<p>Part number 1229406251</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10080 Bracket-assist handle mounting front, left<p>Part number 85331T6500</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10081 Bracket-assist handle mounting front, right<p>Part number 85332T6500</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10082 Bracket-assist handle mounting rear, left<p>Part number 85333T6500</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10083 Bracket-assist handle mounting rear, right<p>Part number 85334T6500</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10084 Handle assembly - roof assist rear, left<p>Part number 85343T1000DUE</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10085 Handle assembly - roof assist rear, right<p>Part number 85344T1000DUE</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10086 Handle assembly - roof assist front, left<p>Part number 85341T1000DUE</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10087 Handle assembly - roof assist front, right<p>Part number 85342T1000DUE</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10088 Clip-Trim Mounting<p>Part number 85459D9000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10090 Clip-module<p>Part number 85399D9000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>