Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '612fcc9ca62bde3ba66f168e5c07a35385b08d1a9c62144a90a97d5bfd1ae648' 
  AND token = '3E7n3YRFiMBYDfGpV13wkJfJB3MTObfgR3sk3R7cF0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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