In UC dbfs file location and dbfs mount point for a table is consider an anti pattern by databricks, this is because dbfs is at the scope of the workspace and it has security limitations (https://learn.microsoft.com/en-us/azure/databricks/dbfs/unity-...
Hithis operation should take seconds because it use the precomputed statistics for the table. Then few elements to verify:if the data type is datetime or integer should work, if it is string data type then it needs to read all data.verify the column ...