SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '89d661d6a7968b955b33bb573ac90f063209649c86f12722cd1ae13363ec582c' 
  AND token = 'YB+q7eglayRhoCa7FeZqismEKHhOaPVJd6L8dLJGKck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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