Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f3367af0beb9000ee00b66c79c8c79526dec64052b1391fd97fafbab1b14dbe' 
  AND token = 'sZ09N6lHYhJ6AIjdR43jUWXzRmnlHcZfsNRuqVBNJ4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00087

JSON explain

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