Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '561f12cc7197d62dd2313859b1c3cc0f3f8185124e7f5c3106259981e9ef44b4' 
  AND token = 'EA2iay88QIN7OXw++x6rWPolvFX0usvLrxzXxpf1iJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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