you do not need to create a file! simply open your Electrum, and from the menu select Tools > Load transaction > From text
and then just paste the raw unsigned transaction there.
i'm not sure why it is showing 'Status: Signed', that is really strange and it shouldn't do that.
but in any case Electrum will not recognize nor sign this raw unsigned transaction because your
ScriptSig field is empty and Electrum needs to know which private key to use for signing the transaction.
0100000001d45343bf472dcb8ca243daccf39b49399065e52bc310068641609cb48f24433c000000001901ff16fd00af6c62d8114d4a4a1d5b9d5d655ca3cf6b3b9ba1000000000240c7130d000000001976a914ed7de5536a51adb2ffa6a8550754b031d73fe19e88ac1ef161000000000017a91461b10fa7361e7e62285a03532263790541f563d58700000000
use at your own risk.