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 (
    10092, 10095, 10096, 10097, 10098, 10099, 
    10100, 10101, 10102, 10113, 10117, 
    10119, 10120, 10124, 10125, 10126
  ) 
  AND cscart_product_descriptions.lang_code = 'ru'

Query time 0.00040

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 (10092,10095,10096,10097,10098,10099,10100,10101,10102,10113,10117,10119,10120,10124,10125,10126) and cscart_product_descriptions.lang_code = 'ru'"
    }
  }
}

Result

product_id short_description full_description unit_name
10092 Clip-Trim Mounting<p>Part number 85849B1000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10095 bolt<p>Part number 1125006203</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10096 screw-tapping<p>Part number 1249304103</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10097 nut-spring<p>Part number 1336305151</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10098 Hook assembly, left<p>Part number 85955T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10099 Hook assembly, right<p>Part number 85956T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10100 Fire Extenguisi<p>Part number 858B9T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10101 Hook-luggage covering<p>Part number 85798T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10102 Net-hook, back<p>Part number 85795T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10113 Cover-luggage<p>Part number 85767T6500UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10117 Holder-Seat Belt<p>Part number 898W1T6000UBL</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10119 Switch assembly - seat back reclining, left<p>Part number 894D0T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10120 Switch assembly - seat back reclining, right<p>Part number 894E0T6000</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10124 bolt<p>Part number 1125106201</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10125 screw-tapping<p>Part number 1249304101</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>
10126 screw-tapping<p>Part number 1249304123</p><p>If you are not sure about compatibility, please contact us in advance to confirm the part number.</p>