Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3ed90d0026fad909ff950bbbcfcabcd0fd0a5447b599fb1255b7e44b4f385d8' 
  AND token = 'S5qg20zDXieDf7fSAw+SuB/uKuN/zdUD+ngt/SiJLC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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