Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1418c3ea60f69c49e792742328369b36bb3ce27d994e93210c7a724b9bd95095' 
  AND token = 'sg/+237pXZB9AfFaJHt1GOPdhM3joLkbmDpjmUsn3Aw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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