Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '108304e217301070659f233ea2324a6ad1974b45da796f53c3407d61f2b4ec62' 
  AND token = 'tCH6H397FsYwU9qfnO6y+S7uX5q2iNiwYiRVC/PkxGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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