Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07881facb51d658148a04233e89a4f5220fb1b9f7de3ae8c78bf2e66a2bc3bbe' 
  AND token = 'nv0Z/n0eGEK8V0h3D4e6hWq5rroXuAy//l9IPVW0ySc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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