Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abf5c831aa1644fe940f775ef8ab0c37802d67359d75d1bd6d43da67af4c48f7' 
  AND token = 'gi8axGuOY7furMsiOCDLzMG9LN/RGiNnvQ6OMJFptfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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