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 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    95147, 95148, 95149, 95150, 95151, 95152, 
    95153, 95154, 95155, 95156, 95157, 
    95158, 95159, 95160, 95161, 95162, 
    95163, 95164, 95165, 95166, 95167, 
    95168, 95169, 95170, 95171, 95172, 
    95173, 95174, 95175, 95176, 95177, 
    95178, 95179, 95180, 95181, 95182, 
    95183, 95184, 95185, 95186, 95187, 
    95188, 95189, 95190, 95191, 95192, 
    95193, 95194
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00085

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "21.63"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 48,
      "rows_produced_per_join": 48,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "16.83",
        "eval_cost": "4.80",
        "prefix_cost": "21.63",
        "data_read_per_join": "183K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (95147,95148,95149,95150,95151,95152,95153,95154,95155,95156,95157,95158,95159,95160,95161,95162,95163,95164,95165,95166,95167,95168,95169,95170,95171,95172,95173,95174,95175,95176,95177,95178,95179,95180,95181,95182,95183,95184,95185,95186,95187,95188,95189,95190,95191,95192,95193,95194)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}