Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02396e40929433d2bd15b50d12f48e90a5e355797538a9b4b28681dfe2bfadf2' 
  AND token = '8UYVs5ufIVdGimn5VuW5ht3RjDFHKkcZiV1QT9zJJOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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