Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61e744808b3621839fcb66798da762cb7cf5474cf9dce8617ab2ce9052e9cc8a' 
  AND token = 'hVXmuzW67svRgD/hsnJ+p3xAAvZxe861W0/L/0CrYRc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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