Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63e167ae1ccdc418f16272298db8004ef26ee055b261c2de541866290f54d756' 
  AND token = 'C7+Bm9k2OUA9JsUoCM+bP+PqUWVWj+sbfTTRqnxP9E8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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