Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1524b10ab6e5483d8a114cc86d07039e3bd26d67143c29ab47b8ef83da5c6e0' 
  AND token = 'KMndAFsZ547CebhLBa7XQWdWTGU5J7SjSUviy2RNdH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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