Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0186a67911ba4907bc3c07afd8fa9b7eaa2f93d9a40de485568f32f1841be524' 
  AND token = 'LqFfgza2rqCxTl7w4EEsm+K6Pxehls0Cp27U/HtPWgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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