Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6bd25ce81b06fdf24f5fb61a09b9cbc5edaf85cd1fe11dbf169bc771dd27410c' 
  AND token = '41hTmUgok+K02E1yCRdIk2fS/WUSPZhiN4B6eCX4V5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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