Restore iCloud Tabs

Yesterday I accidentally quit Safari before clicking "History" -> "Reopen All Windows From Last Session" and all my open tabs were lost.

Unfortunately I do not have a backup of my MacBook or my iPhone, that had the iCloud Tabs synced.

I found that the tabs are kept in ~/Library/Safari/LastSession.plist, but could not revert the file to a previous state.

Is there any way to get my tabs back?