Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89392a7812a41c910e4d3018c0d18bb686b1f71f68f96b5b775e9700162a28e3' 
  AND token = 'fQNSJZYxhihPEmykLi1/ioiqktuRZ5ZCw077gbkUkg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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