Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fba0aa60115be95693c03fa1a9cd1472db659f96d906f9ddcdc57db0f04cf6d0' 
  AND token = 'lRCUF/j2JKXEeMjirqYoGT73QUmBs1JtKQPT4+UAqlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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