Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0528c34674a92eb6c9de7e1fd1cef6a69bcf1f51623a6fb06a846dea54dfa023' 
  AND token = 'CYZmxD7D1uELhfQgFtfSS1LGd7HScLWRbBqO3otEXlM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}