SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'singin_register_heading', 'categories', 
    'most_loved_categories', 'hamburger_loved_categories_menus', 
    'superkind_club', 'all_orders', 
    'return_requests', 'track_my_order', 
    'track_my_order', 'order_id', 'email', 
    'go', 'singin_register_heading', 
    'categories', 'most_loved_categories', 
    'hamburger_loved_categories_menus', 
    'superkind_club', 'all_orders', 
    'return_requests', 'track_my_order', 
    'track_my_order', 'order_id', 'email', 
    'go'
  )

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "7.71"
    },
    "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": 11,
      "rows_produced_per_join": 11,
      "filtered": "100.00",
      "index_condition": "((`cscart_db`.`lang`.`lang_code` = 'en') and (`cscart_db`.`lang`.`name` in ('singin_register_heading','categories','most_loved_categories','hamburger_loved_categories_menus','superkind_club','all_orders','return_requests','track_my_order','track_my_order','order_id','email','go','singin_register_heading','categories','most_loved_categories','hamburger_loved_categories_menus','superkind_club','all_orders','return_requests','track_my_order','track_my_order','order_id','email','go')))",
      "cost_info": {
        "read_cost": "6.61",
        "eval_cost": "1.10",
        "prefix_cost": "7.71",
        "data_read_per_join": "4K"
      },
      "used_columns": [
        "lang_code",
        "name",
        "value"
      ]
    }
  }
}