Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82de00cd7cdd3784b9f0978c71815f6b5cdd06a5d0d9748b9320a486e8827813' 
  AND token = '+Z4LPMaFbQz/xBnvdp5/exgb73cFkRiru8dDLtO5/bw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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