Deploy to Plesk with limited (chroot) shell and no command line PHP

I've got a Laravel 5.3 application and a client that's tied to a Plesk based web host. I have ssh access to the server, but it's an extremely limited environment. Because of this I can't run php from the command line, which means no artisan.

I'm getting the following error in my logs:

production.ERROR: RuntimeException: The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths. in /var/www/vhosts/path/to/httpdocs/app/vendor/laravel/framework/src/Illuminate/Encryption/Encrypter.php:43

The solution to which is, as far as I can figure, php artisan config:clear.

Is there a way for me to do this without artisan?