Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a339aebf411e86956946642b8819fc06ff3d5c6fc43957d9bf9be8f6d31190b5' 
  AND token = '5ggOodhN+B2+uE0S99McSAylN4Jd8bchTlxLDhKdifE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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