Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '289ec6770a55e752485f0a44a28b5b4896a7088010b442c4885a81fdd3f9ba8e' 
  AND token = 'IueOHByhVsvPH3cvIksTfgYMnBCpX9YuUpwOH80Byz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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