Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d0a8197096e4d653abf2ac50a97b44c10202a3444c97a53bbcfb69e6ab8f7b1' 
  AND token = 'ys3SOVqG5Zqm01pleYpJaqkgenskCrBoANEk2DN25qo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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