Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a861fc66d2bddd0364cc26e0c7a086de1cad89d3324c89c01d9c7ba953219c92' 
  AND token = 'y0xEkW2BR5u8szzorIYkPMF1z6mtJHBHgxNAtku6vaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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