Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a606b848e7c7527aae678ddd22efb3ec74e02f21f5b2a4d8df0c15a75a501bc' 
  AND token = '+gxWwRWHPNmEulAf83KhboQs5K//V5cVw5oArAtZDos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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