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 (
    10373, 10380, 10382, 10383, 10395, 10400, 
    10401, 10402, 10403, 10404, 10405, 
    10406, 10407, 10410, 10411, 10417
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00033

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 (10373,10380,10382,10383,10395,10400,10401,10402,10403,10404,10405,10406,10407,10410,10411,10417) and cscart_product_descriptions.lang_code = 'ru'"
    }
  }
}

Result

product_id short_description full_description unit_name
10373 Clip-Trim Mounting<p>Part number 84747J5000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10380 Bracket Assembly - Head Up Display Support<p>Part number 84776T1000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10382 Cover assembly-crash pad main side, left<p>Part number 84780T1100OWN</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10383 Cover assembly-crash pad main side, right<p>Part number 84785T1000OWN</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10395 Connector Assy-Heater TO Air Vent Duct<p>Part number 97470T1000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10400 Retainer-Sun Visor<p>Part number 85235B1000NBD</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10401 Bracket-assist handle mounting front, right<p>Part number 85332T1200</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10402 Bracket-assist handle mounting rear, left<p>Part number 85333T1200</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10403 Bracket-assist handle mounting rear, right<p>Part number 85334T1200</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10404 Handle assembly - roof assist rear, left<p>Part number 85343T1000NBD</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10405 Handle assembly - roof assist rear, right<p>Part number 85344T1000NBD</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10406 Handle assembly - roof assist front, right<p>Part number 85342T1000NBD</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10407 Clip-Trim Mounting<p>Part number 85459G8000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10410 Label-Sun Visor<p>Part number 85262A7000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10411 Label-Sun Visor<p>Part number 85265G9000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10417 Centering_Pin<p>Part number 09145T1000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>