Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '268388ce8ae1af88813adba8208168779b8e6156b4480558199620a257c21c85' 
  AND token = 'O2CfD2Q4vkjYGif97S6tfh55U0rZmEJ4nSQkzhUVjVU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}