Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31f105a1f0c819ec7f22a11b5241f14717240e5dcfb2271b02feb34863444482' 
  AND token = 'KPrlsgC4Xh/lB7rEuHJMuYBfi9dUnekbmfLOhU89TNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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