Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34ca5f7910d480ad9b4c78417546963567a67f25fd420bcaea73e11022300b8d' 
  AND token = 'SjgHJ6Y75+gYjq+ZpaJXHsaocn7Yoyx4WUMwci59+Ws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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