Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '681b9f5e086e2b514a0660480d51212b3343e83dca75e5d2159498e21cc64bb1' 
  AND token = 'Y/oq9KdWnmMe8iUKfHdJfjf2N2KFcBdjBst5IRCQTLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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