Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05c2654a50b72ac5a4b2a9e47a2ffe4dcd552b4b6c48f27c365a43deefd0c09e' 
  AND token = '/FU7Wg/HpQ/qrZ/GveANRueNC/OKtX4kR37YfU70Kdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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