SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'cart', 'empty_cart', 'for', 'remove_product', 
    'cart', 'eitems_design.your_cart_is_empty', 
    'eitems_design.browse_items_and_add_them_to_your_cart', 
    'eitems_design.browse_items', 'subtotal', 
    'open_cart', 'eitems_design.empty_cart_confirm_title', 
    'eitems_design.empty_cart_confirm_text', 
    'eitems_design.cancel', 'empty_cart', 
    'cart', 'empty_cart', 'for', 'remove_product', 
    'cart', 'eitems_design.your_cart_is_empty', 
    'eitems_design.browse_items_and_add_them_to_your_cart', 
    'eitems_design.browse_items', 'subtotal', 
    'open_cart', 'eitems_design.empty_cart_confirm_title', 
    'eitems_design.empty_cart_confirm_text', 
    'eitems_design.cancel', 'empty_cart'
  )

Query time 0.00451

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "lang",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "392",
      "used_key_parts": ["lang_code", "name"],
      "rows": 12,
      "filtered": 100,
      "index_condition": "lang.lang_code = 'en' and lang.`name` in ('cart','empty_cart','for','remove_product','cart','eitems_design.your_cart_is_empty','eitems_design.browse_items_and_add_them_to_your_cart','eitems_design.browse_items','subtotal','open_cart','eitems_design.empty_cart_confirm_title','eitems_design.empty_cart_confirm_text','eitems_design.cancel','empty_cart','cart','empty_cart','for','remove_product','cart','eitems_design.your_cart_is_empty','eitems_design.browse_items_and_add_them_to_your_cart','eitems_design.browse_items','subtotal','open_cart','eitems_design.empty_cart_confirm_title','eitems_design.empty_cart_confirm_text','eitems_design.cancel','empty_cart')"
    }
  }
}