Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a14097d8653d30632f8f0cf9a00c23ac2d757f8d34fb592ac51d5232918c831' 
  AND token = 'navgMxjgSrbFJNuSURFFvk85taBgq/V/4Ul5IRqURyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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