Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1fb9c7d84264f489cc1018af8a09ae54e31e61b961f718344394881103c70c4' 
  AND token = '+4FmXestG+93hZQrKS6c8xT4Ubj8206F0C9Md5o4Q+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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