SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69aa99c814b3a769f67fe1314d91134fe37ce5705059db7c31af290f5a469be1' 
  AND token = '+Pw1j7DrqUHkg0cmsLq8hLw/Z+xenFeOGxyEss127vk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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