Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b2ef60e05ea6a4f01fcb8bcb2f72eb94e52f1bc87d160aa62b121186998a99a4' 
  AND token = 'Vx56ah3cTIngk2Kqgi74gB3GcCW3dOyn/B9OvA67eIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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