Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa2400dab25e62963d3af22eba6ba098fffe9a43d00bf66ecfec28723acb10fd' 
  AND token = 'eXqRjTzcbjjOOH9wmWtFMtdvYVYbz/wEiNzJueRJt48=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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