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 (
    87994, 90317, 90319, 90320, 85645, 87388, 
    88390, 91428, 91430, 88395, 86887, 
    85581, 88389, 88391, 88388, 88095, 
    88392, 92408, 87993, 91427, 91429, 
    87387, 87389, 87383, 87384, 87385, 
    89612, 89613, 88393, 87386, 87382, 
    89611, 82328, 88860, 88861, 88862, 
    88863, 88864, 90819, 90820, 90821, 
    90822, 85563, 88929, 82434, 88858, 
    88859, 90817, 90818, 93790, 93791, 
    93842, 93843, 93844, 93845, 94119, 
    94120, 94121, 94122, 94123, 94124, 
    94125, 94126, 94127, 94128, 94129, 
    94130, 94131, 94132, 94133, 94134, 
    94135, 94136, 94137, 94138, 94139, 
    94457, 94619, 94620, 94621, 94622, 
    94623, 94624, 94625, 94626, 94627, 
    94628, 94629, 94630, 94631, 94632, 
    94633, 94634, 94635, 94636, 94637
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00160

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 (87994,90317,90319,90320,85645,87388,88390,91428,91430,88395,86887,85581,88389,88391,88388,88095,88392,92408,87993,91427,91429,87387,87389,87383,87384,87385,89612,89613,88393,87386,87382,89611,82328,88860,88861,88862,88863,88864,90819,90820,90821,90822,85563,88929,82434,88858,88859,90817,90818,93790,93791,93842,93843,93844,93845,94119,94120,94121,94122,94123,94124,94125,94126,94127,94128,94129,94130,94131,94132,94133,94134,94135,94136,94137,94138,94139,94457,94619,94620,94621,94622,94623,94624,94625,94626,94627,94628,94629,94630,94631,94632,94633,94634,94635,94636,94637)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}