Yes it is there:
Here is the path
/Users/y_lu/Library/Preferences/com.runningwithcrayons.Alfred-Preferences-3.plist
And here is the actual file:
bplist00�
Ubuild_themeEditorBackground_!NSNavPanelExpandedSizeForOpenMode_ NSWindow Frame alfredprefswindow\lastTabBuild_0NSSplitView Subview Frames NSColorPanelSplitView_.NSToolbar Configuration com.apple.NSColorPanel_NSNavLastRootDirectoryWlastTab_NSWindow Frame NSColorPanel�_High Sierra.jpgZ{750, 480}_330 328 1100 662 0 0 1680 1027 �_20.000000, 0.000000, 224.000000, 263.000000, NO, NO_30.000000, 264.000000, 224.000000, 43.000000, NO, NO�[TB Is Shown_/Volumes/OTA/MarketingXadvanced_0 158 224 280 0 0 1680 1027 #;_����25GRtw�����4