Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e15c5accc6fc3d42fb5c3f636258f7961787dacbdfd6effff4b2225198f38e3' 
  AND token = 'LuYbQaUo7NolNrNynuAtr/tmWEpKEIl9h30M4/9tJnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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