Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb181fc8246bc698da04be236f9f6ac800e067a80a03058481ea2af2b68abb89' 
  AND token = 'RlSOZP5R9+Fg0UX9RB45qa2dKfj68Hmj8GelVrA608k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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