Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abff8deb2c7016a34f1f8de698bd175229f9e099101c8f8dc6784e99f37206d0' 
  AND token = 'wIFapWIZEjNrOj+Th20/D9HZ5uv8rS/7fk8GuaPlnC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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