Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '445faba35068ae824b6c73c239177240731e3b8ba2baa6a894ed7be3115f04b6' 
  AND token = 'M2+inBJdF220Ew1fRRXd0YbUFxSzq31aJ+9JiUNF/DM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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