Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8dae24325cbde67e415d10b727866184c4f110673734e16e93e9665345d79dc' 
  AND token = 'jDZZZYJUTESBAIBcqxvjshAVS7Vx0PkFWDQLoTnlEBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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