Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7265acc39a38d8cbaf29600aaa14d5abe0997cacd2ff90e0e6f92300ad2ba9a4' 
  AND token = 'dSHBO5gg+nLsPMY+ZWWl1KODOxAfsuitY50nC86c8mo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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