Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '244de069542aec2b706ccd12c328472d9aea45d2e8986852cae6d9fbc4450e5e' 
  AND token = '7EBBzaPtO1TPlrb0DAPMOIcaFRF+e3x55r4ClA469AM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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