Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd57a9dff63d82124d0f41d846b5ebe3c36cc36c4f8963172da5f430a6fe02fb6' 
  AND token = 'kdY9Pci3U/C4JstfdAqzxppKKHNNbiagkiz9QAbf57I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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