Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aba262e11e81ded8d742b40b07bd17f7da4bfec4241040e1e8b146389509b1da' 
  AND token = 'n5yNemcuwbBKtJzKf00aC5a0o1ocVM0oyARAJK8Sfx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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