Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3a845cc65b0ca535b90a8197b0e6418b1b2ea99eb8ddfaddf4f9e262b4febd5' 
  AND token = 'slzNKQDYfvALI+baTUiPoPOIP0pBOAWArhMo3GDuJuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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