I am implementing stay login functionality using codeingiter 3

Steps:
1. If user signin's successfully , checking the remember me checkbox.
2. Then i am setting 2 cookies for that user.
3. $cookie 1: is 128 length random string ,(series)
4. $cookie 2: is the hash of (email,password,ip,useragent). (token)
5. Now i am storing the series , hash(token) in a table <user_cookie>.

<user_cookies>

user_id(fk) series(128 varchar) token(200 varchar)

Now my doubt is how should validate autologin, when user visits my webpage next time?

   $rand128_hex = bin2hex(openssl_random_pseudo_bytes(16));

   $cookie1 = array(
                    'name' => 'series',
                    'value' => $rand128_hex,
                    'expire' => '86400'
                );

                  $cookie2 = array(
                    'name' => 'remb_token',
                    'value' => hash_hmac('bcrypt',PEPPER_KEY,$remb_token,FALSE),
                    'expire' => '86400'
                );

               $this->input->set_cookie($cookie1);
               $this->input->set_cookie($cookie2);