Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f2ba3ec843f3d204c3af1e31b01e2966913aa8bdbf19101e5061e6e4c8e4babc' 
  AND token = 'daeDlFXxQhaO/ZJT/MyRQYFF5nlZlI4xBQdg39yGrdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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