BUG: Fix MultiIndex lookup with mixed datetime types GH#55969

Author: Aryn1102

pandas/core/indexes/multi.py

@@ -3315,7 +3315,7 @@ def get_loc(self, key, method=None):
         if isinstance(key, tuple):
             new_key = list(key)
             modified = False
-            for i, (k, level) in enumerate(zip(new_key, self.levels)):
+            for i, (k, level) in enumerate(zip(new_key, self.levels, strict=False)):
                 if isinstance(k, np.datetime64) and level.dtype == object:
                     try:
                         new_key[i] = k.item()