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SELECT 
  cscart_product_feature_variants.variant_id, 
  cscart_product_feature_variants.position, 
  cscart_product_feature_variants.color, 
  cscart_product_feature_variant_descriptions.variant 
FROM 
  cscart_product_feature_variants 
  LEFT JOIN cscart_product_feature_variant_descriptions ON cscart_product_feature_variants.variant_id = cscart_product_feature_variant_descriptions.variant_id 
  AND cscart_product_feature_variant_descriptions.lang_code = 'en' 
WHERE 
  cscart_product_feature_variants.variant_id IN (89, 117) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00060

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_product_feature_variants	range	PRIMARY	PRIMARY	3		2	Using index condition; Using temporary; Using filesort
1	SIMPLE	cscart_product_feature_variant_descriptions	eq_ref	PRIMARY	PRIMARY	9	cscart_dev_4_16.cscart_product_feature_variants.variant_id,const	1	Using where

Result

variant_id	position	color	variant
117	0		Nikon
89	0		Samsung