Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '563abf62fa8e310e2bc5d952bd24ce21cb852406c9bf595904820f501eba17ae' 
  AND token = 'zsOg+e6xfkkXeq63oQFw+z76+L16i8rudCnKPo1UbHQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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