Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8780e41a7373717a82b6978e04af3890d520370156cbad48bf6ee69049de1508' 
  AND token = '1BaKT3We2pG+xcvtvh/TOxXazDCGTc/pgyaqH8xT63A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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