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 (
    87227, 87226, 87225, 87224, 87223, 87222, 
    87221, 87220, 87219, 87218, 87217, 
    87216, 87000, 86999, 86998, 86997, 
    86996, 86995, 86994, 86993, 86506, 
    86447, 86446, 86445, 86444, 86384, 
    86383, 86382, 86381, 86380, 86379, 
    86378, 86377, 86376, 86375, 86374, 
    87116, 86470, 86469, 86468
  )

Query time 0.00020

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