How to authenticate fsspec for azure blob storage

From a django REST API view I am trying to access a file that is stored in an azure storage blob. I would like to open it without downloading it into a file, as shown here. Read access is sufficient.

For this I scetched out my view like so:

import os
from fsspec.implementations.http import HTTPFileSystem

@api_view()
def my_view(request):
    url = "https://storageaccount.blob.core.windows.net/container/"
    filename = "file.f"
    fs = HTTPFileSystem(
        container_name=os.environ["AZURE_STORAGE_CONTAINER"],
        storage_options={
            "account_name": os.environ["AZURE_STORAGE_ACCOUNT"],
            "account_key": os.environ["AZURE_STORAGE_KEY"],
        },
    )
    with fs.open(url + filename, "r") as fobj:
        ds = somehow.open_dataset(fobj)

    return Response({"message": "Data manipulated"}, status=200)

This gives a FileNotFoundError.

My questions are:

• Is this even possible with azure blob storage? If not, what would be the closest thing?
• How would I authenticate the HTTPFileSystem? I feel like I more or less made those keywords up but wasn't able to find any information about it...