Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2223f28d4325d09b48dffea5c65539a1deaea35cbd72f79dfb0ffecf00b05ea4' 
  AND token = 'FX2QMhdR6D9eJC0rH4SvUieCBmD6YgudIeBpTeCj9A4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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