Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '055cd0fa7c7c46dfd7c086d0cb6573cc7ff73832df5c56589be9bb74aeaa7473' 
  AND token = 'wv0vEXkgDUvxKnJrIGgIHsMtu/5/hR1wfu1FH95+5/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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