Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2569288b9bf74e24ac4b914d62b804cfb604f9aee588f69c242cb29b03a9738a' 
  AND token = 'HaE7rNQbOx6kQ8vzuFFgl4qDChX6AP3p+WMkts+ysxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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