Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2430d6c9ce5bef230e4ca634a5aea2f3feb1d3f88e7d7999ff14ea09f74aa983' 
  AND token = 'KKty8hWBxSwVzNSskzWtOjD7HwqsAhYrAEITNZITxB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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