Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10ce02e79a8c27415a1b40899491b2041bda0c4c8af32d7a133d34e284e5ea0f' 
  AND token = 'r65veLInoELWfyAw20mLNHw/DWopoEf6jXYOUUYuiio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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