Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b32700b0f23a3b74a01cfb224fb55fe58284206ece302a7751f70aa5afbb504d' 
  AND token = 'VgwIBOo9jeGVQBuHG/2X15a2aCguKPnX/bgTRN+gXUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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