Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32d6f72969dfe0971e03c527108ae2cb4ae5ec80ba03689d2ff4a79ed4a12e5f' 
  AND token = 'HNDSjBCQz7RFDi65aWQp3vA9YjVKUe8Rkn8lLFPBnj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}