Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66929a6aed7fbaba5f8a4b92b04f29c1c525c9a274ee976bc29440c211ab893e' 
  AND token = '/ftDFkvkBBCvC29Cwhov+Isk8JeOn65xvWx9YOSIswE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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