Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2afa57030e9a15c7766ba9b57aa3e60847da3a63b38440ead93fb8aa37679996' 
  AND token = '3NdueKRxV970d8sEgAYJN4IF7qmKyMsgqq6SwWMTdHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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