Sandbox

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 (
    94742, 94741, 94740, 94739, 94738, 94737, 
    94736, 94735, 94734, 94733, 94732, 
    94731, 94730, 94729, 94728, 94727, 
    95619, 95618, 95617, 95616, 95615, 
    95614, 95613, 95612, 95611, 95610, 
    95609, 95608, 95607, 95606, 95605, 
    95604, 95603, 95602, 95601, 95600, 
    95599, 95598, 95597, 95596
  )

Query time 0.00025

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