Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d39e7b01d78ceed6bbfbe08aff06ee0068bf923196c584000ef6531a5169408' 
  AND token = 'QkmTexFkK8uIFTJq4G659ZD5nwEGf60YXW/Yqu5HTPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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