Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '288d7eedc2a70e30c0e62dcc2b9ac71c0cfac3746a3d6839fd5a55c77966522b' 
  AND token = 'N6Rwqju9zA04r6cmMYyrLC4EleJf27+L7gbrIuAAtPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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