Duplicate checking

[livewire]

How much time does it take to run this query:

SELECT SQL_NO_CACHE `id` FROM `lead` WHERE `first_name` = 'some name' AND `last_name` = 'some name' AND deleted = 0

MySQL returned an empty result set (i.e. zero rows). (Query took 0.0036 seconds.)

[livewire]

Does it take long if you import leads w/o email addresses so that only the name is checked for duplicates.

when i skip the emails its much faster

[livewire]

i assume if i check only duplicates by the phone number rather than name and email it will be much faster