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 (
    93363, 93364, 93365, 93366, 93367, 93368, 
    93369, 93370, 93371, 93372, 93373, 
    93374, 93375, 93376, 93377, 93378, 
    93379, 93380, 93381, 93382, 93383, 
    93384, 93385, 93386, 93387, 93388, 
    93389, 93390, 93391, 93392, 93393, 
    93394, 93395, 93396, 93397, 93398, 
    93399, 93400, 93407, 93408, 93409, 
    93410, 93411, 93412, 93413, 93414, 
    93415, 93416, 93417, 93418, 93419, 
    93420, 93421, 93422, 93423, 93424, 
    93425, 93426, 93427, 93428, 93429, 
    93430, 93431, 93432, 93433, 93434, 
    93435, 93436, 93437, 93438, 93439, 
    93440, 93441, 93442, 93443, 93444, 
    93445, 93446, 93447, 93448, 93449, 
    93450, 93451, 93452, 93453, 93454, 
    93455, 93456, 93457, 93458, 93459, 
    93460, 93461, 93462, 93463, 93464
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00216

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 (93363,93364,93365,93366,93367,93368,93369,93370,93371,93372,93373,93374,93375,93376,93377,93378,93379,93380,93381,93382,93383,93384,93385,93386,93387,93388,93389,93390,93391,93392,93393,93394,93395,93396,93397,93398,93399,93400,93407,93408,93409,93410,93411,93412,93413,93414,93415,93416,93417,93418,93419,93420,93421,93422,93423,93424,93425,93426,93427,93428,93429,93430,93431,93432,93433,93434,93435,93436,93437,93438,93439,93440,93441,93442,93443,93444,93445,93446,93447,93448,93449,93450,93451,93452,93453,93454,93455,93456,93457,93458,93459,93460,93461,93462,93463,93464)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}