Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70e1189b4c52c7aac00af6c0d269a8d38bb82854b3976bcdd623182c974cd36f' 
  AND token = 'cvPwZPjEFd6kXaqXmDhbehD5m54TxVxV3awdvlc1/tg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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