RewriteCond %{SERVER_PORT} !^443$
RewriteCond %{QUERY_STRING} (.+)=(.+)
RewriteRule .* https://meine.domain/cgi-bin/meinscript.pl?%1=%2 [L]
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://meine.domain/$1 [L]