Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01e5cb29177f18523976e539b2e170cd9bacbef8a50cea854f76c3374dbe35c7' 
  AND token = 'fECU1Ongq0cTueRMbtcQbB47mWOr5v6Zixn1Y8yxSUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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