Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f55734737eeb99e03e2f560b77bd4ac54bb91600e8b9195967751d42545628f' 
  AND token = 'nho0w6DcgJuhFDa42aoViAeKrhpUmVTzRLeNkx5LQiE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00173

JSON explain

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