Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '305e22b0d20aef11e720dfec6b1f5c71d0d22addbba41263fc22a3f0e9a052ea' 
  AND token = 'wGOLJDZYGPndMF9hBv0qy2lU+UOzzWzsAm5lZcZkq0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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