SELECT 
  video_id, 
  product_id 
FROM 
  cscart_ab__video_gallery 
WHERE 
  product_id IN (
    20749, 20750, 20751, 20752, 20753, 20754, 
    20755, 20756, 20757, 20758, 20759, 
    20760, 20761, 20762, 20763, 20764
  ) 
  AND status = "A"

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "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": 1,
      "filtered": 100,
      "index_condition": "cscart_ab__video_gallery.`status` = 'A'",
      "attached_condition": "cscart_ab__video_gallery.product_id in (20749,20750,20751,20752,20753,20754,20755,20756,20757,20758,20759,20760,20761,20762,20763,20764)"
    }
  }
}