Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77762e466c4cbfc46b1695995cfb18e4a6df1d538e241f6283e9382846ff4e17' 
  AND token = '5UDJtjtYkF7gIOKlg1GA2PpbIONGaZbUX7B25HiOrds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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