How to eager load related models when indexing using SearchKick / ElasticSearch?

This is my search_data method:

def search_data
  {
    email: email,
    skills: interests.pluck(:name)
  }
end

where my User has_many :skills. When I run User.where(conditions).reindex it load the skills records like

SELECT * FROM skills WHERE skills.user_id = 1
SELECT * FROM skills WHERE skills.user_id = 2
SELECT * FROM skills WHERE skills.user_id = 3
SELECT * FROM skills WHERE skills.user_id = 4
. . .

I wonder if it's possible to make it load like this:

SELECT * FROM skills WHERE skills.user_id IN (1, 2, 3, 4, . . .)