SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'new_post', 'write_review', 'ec_hotel_booking.availability', 
    'ec_hotel_booking.adults', 'ec_hotel_booking.childrens', 
    'ec_hotel_booking.rooms', 'ec_hotel_booking.all_available_rooms', 
    'ec_hotel_booking.room_type', 'ec_hotel_booking.price_for', 
    'ec_hotel_booking.night', 'ec_hotel_booking.your_choices', 
    'ec_hotel_booking.select_rooms', 
    'ec_hotel_booking.night', 'ec_hotel_booking.night', 
    'ec_hotel_booking.slot_full', 'ec_hotel_booking.i_will_reserve', 
    'ec_hotel_booking.i_will_reserve', 
    'ec_hotel_booking.lets_go_to_the_next_step', 
    'ec_hotel_booking.confirmation_is_immediate', 
    'ec_hotel_booking.reviews', 'new_post', 
    'write_review', 'ec_hotel_booking.availability', 
    'ec_hotel_booking.adults', 'ec_hotel_booking.childrens', 
    'ec_hotel_booking.rooms', 'ec_hotel_booking.all_available_rooms', 
    'ec_hotel_booking.room_type', 'ec_hotel_booking.price_for', 
    'ec_hotel_booking.night', 'ec_hotel_booking.your_choices', 
    'ec_hotel_booking.select_rooms', 
    'ec_hotel_booking.night', 'ec_hotel_booking.night', 
    'ec_hotel_booking.slot_full', 'ec_hotel_booking.i_will_reserve', 
    'ec_hotel_booking.i_will_reserve', 
    'ec_hotel_booking.lets_go_to_the_next_step', 
    'ec_hotel_booking.confirmation_is_immediate', 
    'ec_hotel_booking.reviews'
  )

Query time 0.00064

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "40.81"
    },
    "table": {
      "table_name": "lang",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "lang_code",
        "name"
      ],
      "key_length": "392",
      "rows_examined_per_scan": 17,
      "rows_produced_per_join": 17,
      "filtered": "100.00",
      "index_condition": "((`atulecarter_new_april_setup`.`lang`.`lang_code` = 'en') and (`atulecarter_new_april_setup`.`lang`.`name` in ('new_post','write_review','ec_hotel_booking.availability','ec_hotel_booking.adults','ec_hotel_booking.childrens','ec_hotel_booking.rooms','ec_hotel_booking.all_available_rooms','ec_hotel_booking.room_type','ec_hotel_booking.price_for','ec_hotel_booking.night','ec_hotel_booking.your_choices','ec_hotel_booking.select_rooms','ec_hotel_booking.night','ec_hotel_booking.night','ec_hotel_booking.slot_full','ec_hotel_booking.i_will_reserve','ec_hotel_booking.i_will_reserve','ec_hotel_booking.lets_go_to_the_next_step','ec_hotel_booking.confirmation_is_immediate','ec_hotel_booking.reviews','new_post','write_review','ec_hotel_booking.availability','ec_hotel_booking.adults','ec_hotel_booking.childrens','ec_hotel_booking.rooms','ec_hotel_booking.all_available_rooms','ec_hotel_booking.room_type','ec_hotel_booking.price_for','ec_hotel_booking.night','ec_hotel_booking.your_choices','ec_hotel_booking.select_rooms','ec_hotel_booking.night','ec_hotel_booking.night','ec_hotel_booking.slot_full','ec_hotel_booking.i_will_reserve','ec_hotel_booking.i_will_reserve','ec_hotel_booking.lets_go_to_the_next_step','ec_hotel_booking.confirmation_is_immediate','ec_hotel_booking.reviews')))",
      "cost_info": {
        "read_cost": "37.41",
        "eval_cost": "3.40",
        "prefix_cost": "40.81",
        "data_read_per_join": "6K"
      },
      "used_columns": [
        "lang_code",
        "name",
        "value"
      ]
    }
  }
}