Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00701e6004217ac91b455586a0b75c057e52b8bb5608f4cca7e038792bee86b4' 
  AND token = 'cJJWqWaca8I7eJGYHdpANMmdFJTTIedFJfqt9jWGXxA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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