Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb62314a7184ead46a48d10c58205f65617c2bc3283c9632e3c14fedb58915d4' 
  AND token = 'bHb1Aw03BHUmgCE86blAY8CVOJHncJF3hTXrKlV7aSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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