Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41ed3c5c64d7612894f7236efbe59c894cdd51757e35cfd133ed7243deb7e65a' 
  AND token = 'wvynbBa0ckc9dt76Pjr2sO6xtFutztDQq7xDL00RSjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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