Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56e42940cab55f39811ea49b5453a1381d75fb2cadb0f8b71d3350f2e6891737' 
  AND token = 'VG3lyRpvRX4qVenPQOrI52gn7eSYRUj1Td4KqyWPDNM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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