Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '814719c87fc831c156f4a7b8111c059f4783468689656d46e031115186fc371a' 
  AND token = 'dE8kzDDjcK009djVY76zbn2LMtp69QaMB1HtbTOVrTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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