Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5e539e0b7e3b5f8248627ea913831f95fcf9b6759a552e780e55caca0efbce0' 
  AND token = 'wQ5CUhqxLjK7EcGTKZRk+yt4+QcP0u9oJYubbzOmNNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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