Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecc9bf19f859de25b6e62c090f456c74354d9d68c85294134760f355be21633c' 
  AND token = 'WY3weTRtjuZmLfqehuU4f5EAdvlHvIPrdrpM0aXpvbY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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