Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8574bd3938ebd476b27e8b4abf6bf3d96f3b50226da7302643d79f93fb30c8b3' 
  AND token = 'dYxPpCX/UaPFwHPIwPaFGh7W6lz8zxJl1RoSMxFnAsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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