Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db0e635254a50d22b05e6fccd87322a45dadc20d378bb9164829b214829819ab' 
  AND token = 'OxT5bc5zFm6xzTQQJbpK3m4j4Z5wBaDUA2KIw7k4A7k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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