Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c8595443f371f304f1a8f3c89c13d3f8d3e6f8d750e5e3d7edb07b31030079aa' 
  AND token = 'apxuX6tpTsJjt6SJP3Trz6RBith5bD98wH/OadjuGuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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