Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36f587cf9758ac562b7ae9f6d57c89143206b6d866c0ec0b10299184954d44c7' 
  AND token = 'u9qnuXXWvadeeHfq0tKco9sWWK+aB+z0rMnJe1DfC+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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