SELECT 
  product_descriptions.product_id, 
  product_descriptions.short_description, 
  IF(
    product_descriptions.short_description = '' 
    OR product_descriptions.short_description IS NULL, 
    product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  product_descriptions 
WHERE 
  product_descriptions.product_id IN (
    410298, 410299, 410835, 410876, 411603, 
    411613, 411637, 412137, 412145, 412166, 
    412170, 412191, 412193, 412196, 412922, 
    412930, 412957, 413457, 414272, 414805, 
    414816, 414841, 415539, 415546
  ) 
  AND product_descriptions.lang_code = 'en'

Query time 0.00115

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "20.12"
    },
    "table": {
      "table_name": "product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "11",
      "rows_examined_per_scan": 24,
      "rows_produced_per_join": 24,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "17.72",
        "eval_cost": "2.40",
        "prefix_cost": "20.12",
        "data_read_per_join": "122K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`goimagine`.`product_descriptions`.`product_id` in (410298,410299,410835,410876,411603,411613,411637,412137,412145,412166,412170,412191,412193,412196,412922,412930,412957,413457,414272,414805,414816,414841,415539,415546)) and (`goimagine`.`product_descriptions`.`lang_code` = 'en'))"
    }
  }
}