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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 (
    73214, 73213, 73212, 73211, 73210, 73209, 
    73208, 73207, 73206, 73205, 73204, 
    73203, 73202, 73201, 73200, 73199, 
    73198, 73197, 73196, 73195, 73623, 
    73622, 73621, 73620, 73619, 73618, 
    73617, 73616, 73615, 73614, 73613, 
    73612, 73509, 73285, 73241, 73408, 
    73402, 73401, 73337, 73336
  )

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