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 (
    98356, 98357, 98358, 98359, 98360, 98361, 
    98362, 98363, 98364, 98365, 98366, 
    98367, 98368, 98369, 98370, 98371, 
    98372, 98373, 98374, 98375, 98376, 
    98377, 98378, 98379, 98380, 98381, 
    98382, 98383, 98384, 98385, 98386, 
    98387, 98388, 98389, 98390, 98391, 
    98392, 98393, 98394, 98395, 98396, 
    98397, 98398, 98399, 98400, 98401, 
    98402, 98403, 98404, 98405, 98406, 
    98411, 98412, 98413, 98417, 98418, 
    98419, 98420, 98421, 98422, 98423, 
    98424, 98425, 98426, 98427, 98428, 
    98429, 98430, 98431, 98432, 98433, 
    98434, 98435, 98436, 98437, 98438, 
    98439, 98440, 98441, 98442, 98443, 
    98444, 98446, 98447, 98448, 98449, 
    98450, 98451, 98452, 98453, 98454, 
    98455, 98456, 98476, 98477, 98478
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00162

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 (98356,98357,98358,98359,98360,98361,98362,98363,98364,98365,98366,98367,98368,98369,98370,98371,98372,98373,98374,98375,98376,98377,98378,98379,98380,98381,98382,98383,98384,98385,98386,98387,98388,98389,98390,98391,98392,98393,98394,98395,98396,98397,98398,98399,98400,98401,98402,98403,98404,98405,98406,98411,98412,98413,98417,98418,98419,98420,98421,98422,98423,98424,98425,98426,98427,98428,98429,98430,98431,98432,98433,98434,98435,98436,98437,98438,98439,98440,98441,98442,98443,98444,98446,98447,98448,98449,98450,98451,98452,98453,98454,98455,98456,98476,98477,98478)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}