Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8b182d61bb7b2209f976b8415241c4d4edd60d5d05711780298fb8b4bbf5302' 
  AND token = 'Ibaj9qyHVoHci7xUXDvThi5QSXeVX2M9TTETTT1qtTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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