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SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    88095, 88094, 88093, 88092, 88091, 88090, 
    88089, 88088, 88087, 88086, 88082, 
    88081, 87851, 87731, 87730, 87729, 
    87728, 88625, 88624, 88623, 88039, 
    88532, 88531, 88530, 88406, 88405, 
    88404, 88403, 88402, 88401, 87762, 
    87678, 88629, 88628, 88627, 88626, 
    88575, 88574, 88573, 88149
  )

Query time 0.00021

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	p	ALL	PRIMARY,idx_group_id				376	Using where
1	SIMPLE	g	eq_ref	PRIMARY	PRIMARY	3	toolboxdigitalshop_dev.p.group_id	1
1	SIMPLE	f	ref	idx_group_id	idx_group_id	3	toolboxdigitalshop_dev.p.group_id	7