Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '35c58a044c30e83d32976673d5ada582607d7688ea1ff7b0ee949e0e8301ccec' 
  AND token = 'cHcW+rt6667XUlbDlpXDnw0l7CPU5PHEovnUrROIo3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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