Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '088b1eab34aed2fe779e4308d69833213baeaf918fe032e69c995a5dde0d9de7' 
  AND token = 'iAGvW755+Ajp9pRYXMFkB8YVUBkwnTRIJjpZC0cNxLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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