Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb52fffc136173942eb2660c9dcf0c57463c8e2f90772284720026cf34269e67' 
  AND token = 'KVoYp17zmHtjMQq/zoeD1cchU5dH0IzmIUj2xA5OuKg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}