Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cbf3d3011925ceb3d3a875a8fc9dfc3b3b03ef3effdc43a6e74c0e3633b95b8' 
  AND token = 'MCUlNWzYIwYGk5Rt50EnMnlHT24H+GaEJd9hj4Q8z9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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