SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'new_post', 'write_review', 'et_average_star_rating', 
    'reviews', 'total', 'et_star', 'et_product_tabs_rating_vendor_right_title', 
    'et_product_tabs_rating_testimonial_right_title_ult', 
    'et_product_tabs_rating_testimonial_right_title', 
    'et_product_tabs_rating_right_title', 
    'et_product_tabs_rating_vendor_right_text', 
    'et_product_tabs_rating_testimonial_right_text', 
    'et_product_tabs_rating_right_text', 
    'et_show_reviews_with', 'et_star', 
    'reviews', 'et_show_all_reviews', 
    'no_posts_found', 'new_post', 'write_review', 
    'et_average_star_rating', 'reviews', 
    'total', 'et_star', 'et_product_tabs_rating_vendor_right_title', 
    'et_product_tabs_rating_testimonial_right_title_ult', 
    'et_product_tabs_rating_testimonial_right_title', 
    'et_product_tabs_rating_right_title', 
    'et_product_tabs_rating_vendor_right_text', 
    'et_product_tabs_rating_testimonial_right_text', 
    'et_product_tabs_rating_right_text', 
    'et_show_reviews_with', 'et_star', 
    'reviews', 'et_show_all_reviews', 
    'no_posts_found'
  )

Query time 0.00083

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "22.42"
    },
    "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": 16,
      "rows_produced_per_join": 16,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "19.22",
        "eval_cost": "3.20",
        "prefix_cost": "22.42",
        "data_read_per_join": "6K"
      },
      "used_columns": [
        "lang_code",
        "name",
        "value"
      ],
      "attached_condition": "((`webmarco`.`lang`.`lang_code` = 'en') and (`webmarco`.`lang`.`name` in ('new_post','write_review','et_average_star_rating','reviews','total','et_star','et_product_tabs_rating_vendor_right_title','et_product_tabs_rating_testimonial_right_title_ult','et_product_tabs_rating_testimonial_right_title','et_product_tabs_rating_right_title','et_product_tabs_rating_vendor_right_text','et_product_tabs_rating_testimonial_right_text','et_product_tabs_rating_right_text','et_show_reviews_with','et_star','reviews','et_show_all_reviews','no_posts_found','new_post','write_review','et_average_star_rating','reviews','total','et_star','et_product_tabs_rating_vendor_right_title','et_product_tabs_rating_testimonial_right_title_ult','et_product_tabs_rating_testimonial_right_title','et_product_tabs_rating_right_title','et_product_tabs_rating_vendor_right_text','et_product_tabs_rating_testimonial_right_text','et_product_tabs_rating_right_text','et_show_reviews_with','et_star','reviews','et_show_all_reviews','no_posts_found')))"
    }
  }
}