The ornamental design for a keywayportion, as shown and described.
FIG. 1 is a perspective view taken from a bottom, front, right side of a keyway portion, according to my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a perspective view taken from a top, front, right side thereof shown on a connector where the keyway portion is part of a female keyway of the connector; and,
FIG. 4 is a perspective view taken from a top, rear, left side thereof shown on a connector where the keyway portion is part of a male keyway of the connector.
The dash dot lines immediately adjacent to the shaded areas in the views represent the boundaries of the claimed design. The dashed lines in the figures illustrate the portions of the design that form no part of the claimed design. None of the broken lines form any part of the claimed design.