Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d77e19d1c19dce3a12ff874565bf9f87aca8926f359b36cb9c7f010b9566617' 
  AND token = 'NpnHmEaiJc7iBWj521iuUZr+xFiuWiTko2kVvdlNwuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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