The ornamental design for a keychain with inserts, as shown and described.
FIG. 1 is a top plan view of a keychain with inserts.
FIG. 2 is a bottom view of the keychain with inserts of FIG. 1.
FIG. 3 is a front elevation view of the keychain with inserts of FIG. 1.
FIG. 4 is a rear elevation view of the keychain with inserts of FIG. 1.
FIG. 5 is a left side elevation view of the keychain with inserts of FIG. 1.
FIG. 6 is a right side elevation view of the keychain with inserts of FIG. 1.
FIG. 7 is an isometric view of the keychain with inserts of FIG. 1; and,
FIG. 8 is another isometric view of the keychain with inserts of FIG. 1.
Portions of FIGS. 1 through 8 are shown in broken lines and dash-dot-dash boundary lines illustrating portions of the article that form no part of the claimed design.