Add check for missing tocken error

cal_tools/cal_tools/tools.py

@@ -563,8 +563,11 @@ def get_from_db(device, constant, condition, empty_constant,
             except Exception as e:
                 if verbosity > 0:
                     print(e)
-                ntries = 0
-                break
+                if 'missing_token' in str(e):
+                    ntries -= 1
+                else:
+                    ntries = 0
+                    break
 
         if ntries > 0:
             if verbosity > 0: