Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '599d78a85c3a5354d59cc2681213425dedfe347aa179f7afcb0dbcfef8606522' 
  AND token = 'XvMSQ4KfaoMeTRAfbUI+YUw5hufeSDt/Wx5m6dG6U5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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