Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eebfbf7b9651dd69889c01d6e8a8ab0961965f281b7a01c22473bb0e6706a7e0' 
  AND token = '8wbQGPcrFKDpry8kJ5eA9q41QXPZltUD4syY/Z09uJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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