Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6aca564ffe077004b382e2824ebbc6033669feb00d7e97dee6dfd360dae94764' 
  AND token = 'mMwIJfIjW2nEfwyzRZkblX/i4EvQ/0Q57BmwYvRvuGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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