How to make a redirect work in HTACCESS from a specific url?

Question

htaccess

Hello, tell me how to make a redirect with the URL /2-glavnaya?q=%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D0 %B8-%D0%94%D0%B5%D1%82%D1%81%D0%BA%D0%B8%D0%B5+%D0%BA%D1%80%D0%BE%D0%B2%D0% B0%D1%82%D0%BA%D0%B8 to the main page for example.
This is Opencart.
Tried different ways, nothing works.

Answer 1

At the beginning of .htaccess add

RewriteCond %{QUERY_STRING} (?:^|&)q=%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D0%B8-%D0%94%D0%B5%D1%82%D1%81%D0%BA%D0%B8%D0%B5\+%D0%BA%D1%80%D0%BE%D0%B2%D0%B0%D1%82%D0%BA%D0%B8(?:$|&)
RewriteRule ^2-glavnaya$ /? [R=301,L]