Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1d2b8931a7f08061d8daa6839593460cf0c483c54cd711f0ed691f0769f7a22' 
  AND token = 'y8rZtW4iLjdYRXr2uNjarhdL8G/upI5ExPVbXUenkYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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