Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '760f566ca9c1a863c58dbf820ce48209ab6ce821220f031d03746348c0d05c74' 
  AND token = 'pAOVV5Smx5lV9tzigR/exZD5dUfOeQUJPFaVbTIuuqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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