Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92df46d2c169332fca19441f09ea7dc72a8307161d770a0672f4ab3d5577b10e' 
  AND token = 'CfmWGSHcuaj1sJ0y4ho5NSFsN3lIEqc7lFY1wTSbgdk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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