Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '660fba395c8eb01f398bc668bad6a7652d72f39304f98d2e4723f07028525b78' 
  AND token = 'aocBzpeNn5yWd+eA+quV+3Z6bHbNVEZRCul9gvLRGa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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