Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1df29b542b6788325d39a2eb35d31a9b289a2e9d9d8f98816bfc21df5501fc1e' 
  AND token = 'qE8LQRwGJ37bMLV0s9n3epNlBbhQOYzrPFmNyahpoNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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