Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb5276e48c293f284c23f622f215a74c383c80d0657006bec7573f1ed2752e61' 
  AND token = '6X+p6Snj3ZvbTYQvNB+JyBHt/oXrz6N81WN6GfkGURM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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