Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24cb234c02d31e9e7de9f722b3d5cf6fc1f0b8c2fd906d65becaa0bdb2abacc7' 
  AND token = 'IbrwKwRwwNGyBBlCMpDgoNkNLLpcxFGi5ljDvUku94U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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