Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '662fff93af3aea513bc8d9ca644b8945fa13647474375cb26a23485af334a581' 
  AND token = 'gX5QEjQu4zRGSUU9WIIo6st72G8Tq8wlIWnp/jmfS2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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