Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab22bef067d1da11ec054215bd98c6da2c1d1510a1888e7c9b3a521680907f94' 
  AND token = 'YlGR+zJRrTZyMhahk4/mGA6Dth97696n501eOPQ/bAQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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