Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '433a1447838c8d529292358ec0fc048a5970f1943544e571e0c50ecd2e9fbf6d' 
  AND token = 'OeSKU/XjubSEgP04itcJA5BYhb77HIF7eHM3ykbGRzo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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