Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24edc062421895993a729a73426ff7c94d94b9eca604c8f2c109085351589216' 
  AND token = '49e5DG5oNqnV+7MO3+SV67JYAHBN30wUaKgIu4rdBug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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