Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'e53639bdffcc14d1a6f6d722f84ec64040021dcbcfb34f69acd38ee8e066d15b' 
  AND token = 'Ga9pMiuXV8ocCQRsI5VU/82VbMSfh5Yg5mLijTd4zJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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