is it okay to logged in my apple ID from different country? Will apple detect this as hack account?

I don't think so as long as it is your own ID and you know the password. It has to be the same ID that was used in your iPhone if it was locked.

If you are moving to another country or will be there for an extended period time you need to change your iTunes account "home country". You also need to change your payment details. See this link for more info:Change your iTunes Store country or region - Apple Support