Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '023188dbd962341004201d443a2ad1c753c817c1a458533d9ffc9aa6b73cc089' 
  AND token = '3Do80dcoakSoo3wwX5v3pzYXnTBLbHK6wu7ykCESfh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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