Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7bfdae25c7bf30917f21a2e4c7f4d02f771230060421431928e9b29a1684194' 
  AND token = 'E20lcuhX/T4buwWkmuef/dOrMEfdPhH55Gz5dP/cqTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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