Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '87ffaa05d9f48fa13771aab6a88ac1b6b575b7cfba6e98f532ad6632978d2980' 
  AND token = 'PZUbc/FVUaOJ1obEF+atNZmt9OWVV+aYlZ65t0Wv4Sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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