Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bed4ed7a2fd9b6a8e864460db63c02e4d8ea76045684aea6f592e719eabed8d4' 
  AND token = 'lImXRtw4c024R1micw7ljIs6qbK0FoZq27HbSj476FU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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