title: Cassandra table - select query with where clause
body: <pre><code>I am trying to create a table in Cassandra. 
  
  CREATE TABLE users (
    user_name varchar PRIMARY KEY,
    password varchar,
    gender varchar,
    session_token varchar,
    state varchar,
    birth_year bigint
  );
  </code></pre>
  
  <p>Now If I want to query the table username and password where my session_token = 1000001 </p>
  
  <pre><code>Select user_name,password from users where session_token = 1000001;
  
  Will this query work or do I have to create an index on session_token first and then do select query?
  </code></pre>