Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5decc7db04318dd949114350b5a303543f21cf4d88a0901e6f0429c46bc5efd0' 
  AND token = 'JJnlsgB3mo1u6VyfK+VNZC9URDavFbWPgCk1nJ7lFTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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