Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9a677d4b042f5fc3462dc53ff37eb431cb7c71d59c0961afcd872245e4b1fde8' 
  AND token = 'HUMSM4i1PxxTMmPpkMWdKFqQUI42RAyurOGY9fwoWGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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