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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 = 'en' 
WHERE 
  cscart_images_links.object_type = 'product' 
  AND cscart_images_links.type = 'A' 
  AND cscart_images_links.object_id = 9938 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00050

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	2	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	position	image_path	image_x	image_y	images_image_id
25434	9938	product	21021	A	1	xdp_02.jpg	800	789	21021
25435	9938	product	21022	A	2	xdp_01.jpg	800	666	21022
25454	9938	product	21041	A	3	optilight_mxt_03.png	524	478	21041
25455	9938	product	21042	A	4	optilight_mxt_04.png	499	453	21042
25456	9938	product	21043	A	5	optilight_mxt_05.png	506	410	21043