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 (
    85113, 78852, 6427, 2237, 2236, 2235, 
    2231, 2233, 2232, 6665, 2227, 2230, 
    2228, 42056, 2225, 6642, 2226, 6457, 
    2223, 2222, 2211, 2221, 2220, 2217, 
    2216, 2214, 2213, 2212, 2218, 2219, 
    2194, 2210, 2209, 2208, 2207, 2206, 
    2205, 2204, 2203, 2202, 2201, 2200, 
    2199, 2198, 2197, 2196, 2195, 2193, 
    2192, 2191, 2190, 2189, 2188, 2187, 
    2186, 2185, 2184, 2183, 2182, 2181, 
    2180, 2179, 2178, 2177, 2176, 2175, 
    2174, 2173, 2172, 6881, 6880, 7042, 
    2170, 2169, 2171, 2167, 2168, 14349, 
    14348, 14345
  )

Query time 0.00073

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE f ALL idx_group_id 46
1 SIMPLE g eq_ref PRIMARY PRIMARY 3 toolboxdigitalshop_dev.f.group_id 1
1 SIMPLE p ref PRIMARY,idx_group_id idx_group_id 3 toolboxdigitalshop_dev.f.group_id 16 Using where