Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1984b1193028327f4c7293e8c3d93b7a77c9e9e6a2c021064d7a9763339cd025' 
  AND token = '/5xctbP6BX23qc8rr+ufnW2BXHlphdKBgcpXAr0ybPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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