Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bf97137a73c5b0501b47feda77b7cde6295041b856d92599200bba9e930c06b' 
  AND token = 'JYGIYYtBDcheVWLUum8404HX1VxAmYKWO7S5sGZKQXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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