Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87fc8d3ab8dce5dbd2845fcecf22d682ed748fb3477407799add542a9450c3eb' 
  AND token = 'pcfk2CbDDrjWT152QOZRt+pMdBwLI44jgzkK3Y+WZPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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