Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b1ea1cbf1cc96096e665ef92ff33a5d79acd0811b5b8419c045048972b2529d' 
  AND token = 'CEXciyAJQVdQj5A0vy24iozEnpnN5eXN3W3GzF+74/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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