Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95c483498e35338c21bbc1eb3b4fe786a3865a7ee68df37f21b49eecd361ae04' 
  AND token = 'WYqkMGMcuwYv06w7P3bKDXJsrMlo608RxKAI3wXgCd0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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