Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cc839b564263f6f50b17f1ab283001766bfced3c6f6635873af72645e70ea9d' 
  AND token = 'Yauu13XYU/H6n169MRVCk0Y7vyygrRTAzlkccKDPkD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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