SELECT 
  video_id, 
  product_id 
FROM 
  cscart_ab__video_gallery 
WHERE 
  product_id IN (
    20635, 20636, 20637, 20638, 20639, 20640, 
    20641, 20586, 21515, 20643, 20644, 
    20645, 20646, 20647, 20648, 20649, 
    20650, 20331, 20188
  ) 
  AND status = "A" 
  AND storefront_id IN (1, 0)

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_ab__video_gallery",
          "access_type": "ref",
          "possible_keys": ["status", "product_id"],
          "key": "status",
          "key_length": "3",
          "used_key_parts": ["status"],
          "ref": ["const"],
          "rows": 2,
          "filtered": 100,
          "index_condition": "cscart_ab__video_gallery.`status` = 'A'",
          "attached_condition": "cscart_ab__video_gallery.product_id in (20635,20636,20637,20638,20639,20640,20641,20586,21515,20643,20644,20645,20646,20647,20648,20649,20650,20331,20188) and cscart_ab__video_gallery.storefront_id in (1,0)"
        }
      }
    ]
  }
}