There is no region lock in the PC (Java) version of Minecraft. The Minecraft gift cards for PC are completely region-free.
Can I Buy International Gift Cards?
Can you buy Minecraft for someone in a different country?
You can buy it for someone else as a giftcode if I remember correctly. If that for some reason doesn’t work you just have to make the account yourself, buy it for yourself and the just give the login data to the person you want to give the account to.
How do you buy Minecraft with a gift card?
Redeem your Windows Gift Card via the Microsoft Store
Go to the Windows Store and search for the game Minecraft;
Choose the Minecraft game that you would like to have;
Click Buy and, if necessary, log in to your Microsoft account;
Choose Redeem a gift card as the payment method;
Can you buy Minecraft with a Visa gift card in Canada?
US Purchasing You cannot make a purchase from outside of the US using a credit or debit card issued in the US. Due to US law, many or all prepaid debit cards (such as Visa Vanilla) purchased in the US will not work for purchases in our online store, as Mojang is located outside of the US.
FAQ
Are Minecraft redeem codes region locked?
Sadly all items bought in the Microsoft store are locked to the region they were bought in. So if you accidentally bough this game in the wrong region then your only option here would be to ask for a refund.
Do Minecraft gift cards still work?
Minecraft prepaid cards can be used on a Microsoft account (that is not already associated with a copy of the game) and entitle the cardholder to one Minecraft license (in other words, one copy of Minecraft).
Do Visa gift cards work for Minecraft Realms?
Purchasing Minecraft. If you are in the United States or Australia, using a gift card may be the easiest way to buy Minecraft. There is also the option of purchasing Minecraft directly online. For either option you need to create a Mojang account first.