Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5334c13e9ac11f01b02ffbcc1beaa4e735b8a4ca69e2f03d0369e14f810d683' 
  AND token = 'sO1qVsOyobcB5ZYGMO/kbA9mtPJe6C12ugNT/nlsYcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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