SELECT 
  video_id, 
  product_id 
FROM 
  cscart_ab__video_gallery 
WHERE 
  product_id IN (
    21967, 21968, 21969, 21970, 21971, 21972, 
    21973, 21974, 21975, 21976, 21977, 
    21978, 21979, 21980, 21981, 21982
  ) 
  AND status = "A"

Query time 0.00017

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 (21967,21968,21969,21970,21971,21972,21973,21974,21975,21976,21977,21978,21979,21980,21981,21982)"
    }
  }
}