How to define get requests in htaccess?

Question

htaccess

Hello World! There is a get request http://example.com/?page={some_parameter}
how can I make a redirect through htaccess when this type of get request comes in?

Answer 1

# example.com/?page
RewriteCond %{QUERY_STRING} ^page
RewriteRule ^ /not_found? [R=302,L]
Decided like this, if there are better options?