504 Gateway Time-out in phpMyAdmin

Hi there I’m getting 504 Gateway Time-out - nginx when I import a big DB via phpMyAdmin, I already tried
increasing
max_execution_time

adding this to nginx config

proxy_connect_timeout 600;
proxy_send_timeout 600;
proxy_read_timeout 600;
send_timeout 600;

but I don’t get it work.

Thanks.

Anyone can help?