Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f72247586df3dab4fc6db461fa00957bbeef8ab66b904048f1645d5ac5547dd' 
  AND token = 'si5Qd83oD6/ZbuKyBT4djRlBDvk/uR7VuoGg4+t0hUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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