diff --git a/hsapi/hsapi/preauthkeys.py b/hsapi/hsapi/preauthkeys.py
index 117092f..01a4747 100644
--- a/hsapi/hsapi/preauthkeys.py
+++ b/hsapi/hsapi/preauthkeys.py
@@ -16,7 +16,7 @@ class v1PreAuthKeyResponse(BaseModel):
 
 class v1ExpirePreAuthKeyRequest(BaseModel):
     user: str = Field(alias="user", default=None)
-    key: int = Field(alias="key", default=None)
+    key: str = Field(alias="key", default=None)
 
 
 class v1CreatePreAuthKeyRequest(BaseModel):
diff --git a/hsapi/hsapi/schemas.py b/hsapi/hsapi/schemas.py
index 025980b..3b309a7 100644
--- a/hsapi/hsapi/schemas.py
+++ b/hsapi/hsapi/schemas.py
@@ -45,7 +45,10 @@ class v1PreAuthKey(BaseModel):
     def expired(self) -> bool:
         tzinfo = timezone(timedelta(hours=0))  # UTC
         now = datetime.now(tzinfo)
-        return self.expiration < now  # type: ignore
+        exptime = self.expiration < now
+        expused = not self.reusable and self.used
+        expephemereal = self.ephemeral and self.used
+        return exptime or expused or expephemereal
 
 
 class v1User(BaseModel):