Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9806895a2a5acf30378022c40a18cea59de182a37d1dffd23b3db87a5e380895' 
  AND token = 'iN4puWF6+naib/UUru5ZUBtbRludlHdz4/tXqNXzLmQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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