Sandbox

SELECT 
  * 
FROM 
  cscart_product_feature_variants 
  LEFT JOIN cscart_product_feature_variant_descriptions ON cscart_product_feature_variant_descriptions.variant_id = cscart_product_feature_variants.variant_id 
  AND cscart_product_feature_variant_descriptions.lang_code = 'tr' 
WHERE 
  cscart_product_feature_variants.variant_id = 130

Query time 0.00107

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_product_feature_variants	const	PRIMARY	PRIMARY	3	const	1
1	SIMPLE	cscart_product_feature_variant_descriptions	const	PRIMARY	PRIMARY	9	const,const	1

Result

variant_id	feature_id	url	color	position	variant	description	page_title	meta_keywords	meta_description	lang_code	gr__sf_seo_variant
130	18			0	Cleveland	<p>Cleveland Golf is an American golf equipment company based in Huntington Beach, California. The company was founded in 1979 by Roger Cleveland, originally producing replicas of classic golf clubs from the 1940s and 1950s. Cleveland currently produces a full range of golf clubs and accessories.<br></p>				tr