feat(jwt): add iat field

utils/token.py

@@ -1,7 +1,8 @@
 import jwt
 import os
+from time import time
 
 def generateKey(email, passwd):
     key = os.getenv('KEY')
-    encoded = jwt.encode({email: passwd}, key, algorithm="HS256")
+    encoded = jwt.encode({email: passwd, 'iat': time()}, key, algorithm="HS256")
     return encoded