Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7fe2406f16c9615379040edfcad264208141c73bae4c3c90534589b6940ebb3' 
  AND token = 'N9PwZTJ5WPaTe4rip6uEyr9g6Skh3WHGSSlgBm/3pIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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