Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5153ccae92712cc388583e921b55c1b8c49be279e856abdfdd0a940fa3826953' 
  AND token = 'arSAT7yYcw5zrpvdEdWCZYd6c+cGjqJUx3PNR5i4qqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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