Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47b950d28bf3234e832990d05310fffe8febcc6a4561f9112617cab2d31b0260' 
  AND token = 'lhqA/lVo3lHbpWk/2FrJTG03uYBLgrbGrSpf2BbS/I8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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