Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '557cc9d5f575d3e569d66660cb10cf96a4ebd7e28888589cd0dc4b9b52b96f0e' 
  AND token = 'pYaw1HiKXOMvTk+PUbolmX5mqHg8hxaBSAbtDRoiryo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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