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SELECT 
  cscart_images.*, 
  cscart_images_links.*, 
  cscart_common_descriptions.description AS alt, 
  cscart_images.image_id AS images_image_id 
FROM 
  cscart_images_links 
  LEFT JOIN cscart_images ON cscart_images_links.image_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 IN (
    68280, 68279, 68278, 68277, 68276, 68275, 
    68274, 68575, 68204, 68406, 68375, 
    78288, 78287, 78286, 78285, 78284, 
    78283, 78282, 78281, 78280, 78279, 
    78278, 78277, 78276, 78275, 78274, 
    78273, 78272, 78271, 78270, 78269, 
    78268, 78267, 78266, 78265, 78264, 
    78263, 78262, 68395, 68189
  ) 
ORDER BY 
  cscart_images_links.position, 
  cscart_images_links.pair_id

Query time 0.00073

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_images_links	range	object_id	object_id	81		40	Using index condition; Using filesort
1	SIMPLE	cscart_images	eq_ref	PRIMARY	PRIMARY	4	toolboxdigitalshop_dev.cscart_images_links.image_id	1
1	SIMPLE	cscart_common_descriptions	eq_ref	PRIMARY	PRIMARY	108	toolboxdigitalshop_dev.cscart_images.image_id,const,const	1	Using where