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 (
    87369, 82440, 87368, 87363, 82439, 87362, 
    87361, 87356, 87360, 87355, 82523, 
    82522, 82517, 91476, 82516, 89559, 
    82515, 91475, 82514, 82511, 82510, 
    89555, 89554, 85634, 85633, 92575, 
    92576, 92577, 92578, 92579, 92580, 
    92581, 92582, 92583, 93957, 93958, 
    93959, 93963, 93964, 93965, 93966, 
    93967, 93968, 95010, 95011, 95012, 
    95013, 95014, 95015, 95016, 95017, 
    95018, 95019, 95020, 95021, 95022, 
    95023, 95024, 95025, 95026, 95027, 
    95028, 95029, 95030, 95031, 95032, 
    95033, 95084, 95085, 95086, 95087, 
    95088, 95089, 95090, 95091, 95092, 
    95093, 95094, 95095, 95321, 95322, 
    95323, 95324, 95325, 95326, 95327, 
    95453, 95454, 95455, 95461, 95462, 
    95464, 95465, 95466, 95485, 95486
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00183

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "43.24"
    },
    "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": 96,
      "rows_produced_per_join": 96,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "33.64",
        "eval_cost": "9.60",
        "prefix_cost": "43.24",
        "data_read_per_join": "366K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (87369,82440,87368,87363,82439,87362,87361,87356,87360,87355,82523,82522,82517,91476,82516,89559,82515,91475,82514,82511,82510,89555,89554,85634,85633,92575,92576,92577,92578,92579,92580,92581,92582,92583,93957,93958,93959,93963,93964,93965,93966,93967,93968,95010,95011,95012,95013,95014,95015,95016,95017,95018,95019,95020,95021,95022,95023,95024,95025,95026,95027,95028,95029,95030,95031,95032,95033,95084,95085,95086,95087,95088,95089,95090,95091,95092,95093,95094,95095,95321,95322,95323,95324,95325,95326,95327,95453,95454,95455,95461,95462,95464,95465,95466,95485,95486)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}