Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e433bce4246c4cbcc928bdf621641c13ecd0630d5ec06244e9b22f50d556db74' 
  AND token = 'KQRTgECCVcqemdjhaXkKqaUhEl+SsvPBlx3JpVNn8pc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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