Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f0562c90ea533e28f6c0083825160422d5b6630940247c65e330cafdb9dcdf6' 
  AND token = 'BmzrrlZAk7Zxff/0Xsz6cK7qAuDG3t+MWSvI6+EL9Pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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