Ruby on Rails IF Statement Verification Check

so I'm new to ruby on rails and I'm having a problem with this if statement, basically what I'm checking for is if the confirmation token in the sql database exists for the email address logging in. If it does kick back a message your email isn't verified. Once you click the link in the email, it deletes the token in the database. Then you can proceed to login. I cant get it working for the life of me. Everything else works but the verification check. Thank you for your help !!!

 def authenticate(email, password)
   command = AuthenticateUser.call(email, password)
   user = User.find_by email:(email)
   confirmationtoken = 
   User.find_by_confirmation_token(params[:confirmation_token].to_s)
   if user.present? && confirmationtoken.present?
     render json: {error: 'Email not verified' }, status: :unauthorized
   elsif command.success?
     render json: {
       access_token: command.result,
       message: 'Login Successful'
     }
     else
       render json: { error: command.errors }, status: :unauthorized
     end
   end