SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ec93746c41f78954c2a4bc7b9e35521999d60bf1e40382655632fe1222bf6599' 
  AND token = 'DrQ4jHhC4NLACn2wHxqjRf9MtmJjzh7xgzJPNgqm7mI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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