Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '853a06521c9a8f487dcd3dc11b7b956a2de1782d91929ba22eeba31aed7e2427' 
  AND token = 'CHLKltM8o3VhSsAVBvLFbDpJbQGa9S5Iq4LO+F1SA2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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