Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5965d5fa16c726a1b739026d1d019dd3987fbefdd90b3e39dedea929bc9b3383' 
  AND token = 'RneVX2Wl1aNgsr/Lu6t2ZR0ff1pTI37ah2WQndE57yM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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