Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cb07733bb08b110e972308c632131b60b7c92828507f0e5c15957337907383b' 
  AND token = 'BM4yDopU9BdImkejHa3vRfjNqAvsMjD94Z0SPV1xW4s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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