Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f07ffc3acb1675ab7c081dbeb257e5c37e1331c196af82d5c3d63550d0f459b1' 
  AND token = '5+gl0+NMlkOzl8KTbFAY6F8BvRfCzeTco43ZEU4dPQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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