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 (
    93190, 93191, 93192, 93193, 93194, 93195, 
    93196, 93197, 93198, 93199, 93200, 
    93201, 93202, 93203, 93204, 93205, 
    93206, 93207, 93208, 93209, 93210, 
    93211, 93212, 93213, 93214, 93215, 
    93216, 93217, 93218, 93219, 93220, 
    93221, 93222, 93223, 93224, 93225, 
    93226, 93227, 93228, 93229, 93230, 
    93231, 93232, 93233, 93234, 93235, 
    93236, 93237
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00084

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 (93190,93191,93192,93193,93194,93195,93196,93197,93198,93199,93200,93201,93202,93203,93204,93205,93206,93207,93208,93209,93210,93211,93212,93213,93214,93215,93216,93217,93218,93219,93220,93221,93222,93223,93224,93225,93226,93227,93228,93229,93230,93231,93232,93233,93234,93235,93236,93237)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}