Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f093d11bd32b320315d79382983a40892dcced1777c70f594614e6e1e37fa78d' 
  AND token = 'g8rx7Z13Rij2W+FQnW9cSLgK6cg2HEJj0rIJud08AlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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