Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f7de141e4ecaf888181e2b192dd4e6eb711d88e18148b47ac556e5ffd1ca34f' 
  AND token = 'JVRy2lJ1LkIWE4q+bPzIC+qjNZtN07fOFvplUwJCIl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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