Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5633b763fd4dea507ecccba6d9bedbb8ab65c679dfb6453c80abbe730acead32' 
  AND token = 'XmeSWY38CIjVkeuJdlbrdQVEoEeZ5z0ZlVOgPd82gdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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