Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09083f657f1f883fd690fdc77bbe45fc96c33b4f007da8468c38099d631b61fa' 
  AND token = 'QjfWmhyyIoETegoUR+4iDuuLSo90qBU8Q4QSTMKKp5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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