Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '087dcda61392ca3fcacafc91860726084e9244f48c9a30337961056a49e22eec' 
  AND token = 'pcY89wWIBZZSTqj5kC4aOANqnp8lByGZMlyPkqVS5As=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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