Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60c8ff6a3f3b499f9330bf899b1091164586c9c0803cc9999a292faf79cd53ff' 
  AND token = 'aePQRlZim1+Gq0RM26ehWhTGUgSI8XFOacMe4Z72G9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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