Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e585388e059dd6480bc9be93c93382601d44ece01313929f65524767ce0c13c2' 
  AND token = 'Pd1Asj3I9CMyibKZ0qFBKnoOsotA7bsueUAG07AdyoI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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