Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95351e0d0641c5b5fcaec5e87947077c052aabc6abaaee1c00bde0721096294e' 
  AND token = 'Z1456OKK40H6tAjzbhJuRNifApsPtKlz2kFpLn6xzJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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