Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f951c46b07a2dfab56f3a4bbffb3fae4366eb7423edfc6aa47e7edf82d349750' 
  AND token = 'Yx5nE3pKdyZTviFskd7FvZP/wazQeEyqW/VloL6w1ZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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