SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '885ec80cae7f6aa593e87360e02a4d9b7f92ffc863d14b225437b59b812388fc' 
  AND token = 'WFP/OWL5ajuDlVZfopxZJuf/yx8//5sbHaKpRqeZJQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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