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SELECT 
  cscart_images_links.*, 
  cscart_images.image_path, 
  cscart_common_descriptions.description AS alt, 
  cscart_images.image_x, 
  cscart_images.image_y, 
  cscart_images.image_id as images_image_id 
FROM 
  cscart_images_links 
  LEFT JOIN cscart_images ON cscart_images_links.detailed_id = cscart_images.image_id 
  LEFT JOIN cscart_common_descriptions ON cscart_common_descriptions.object_id = cscart_images.image_id 
  AND cscart_common_descriptions.object_holder = 'images' 
  AND cscart_common_descriptions.lang_code = 'fr' 
WHERE 
  cscart_images_links.object_type = 'product' 
  AND cscart_images_links.type = 'A' 
  AND cscart_images_links.object_id = 556 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00051

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_images_links	ref	object_id	object_id	81	const,const,const	4	Using index condition; Using where; Using filesort
1	SIMPLE	cscart_images	eq_ref	PRIMARY	PRIMARY	3	mahm3t_cs443.cscart_images_links.detailed_id	1	Using where
1	SIMPLE	cscart_common_descriptions	eq_ref	PRIMARY	PRIMARY	107	mahm3t_cs443.cscart_images.image_id,const,const	1	Using where

Result

pair_id	object_id	object_type	detailed_id	type	image_path	image_x	image_y	images_image_id
31339	556	product	26917	A	133524-01-XXL.png	1088	725	26917
31340	556	product	26918	A	124248-06-XXL.jpg	1024	682	26918
31341	556	product	26919	A	135512-01-XXL.jpg	1024	683	26919
31342	556	product	26920	A	135525-01-XXL.jpg	956	454	26920
31343	556	product	26921	A	135526-07-XXL.jpg	1088	768	26921
31344	556	product	26922	A	135572-01-XXL.jpg	725	1088	26922
31345	556	product	26923	A	135671-01-L.jpg	725	1088	26923
31346	556	product	26924	A	136363-01-XXL.png	1088	725	26924