Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89130e8b7a1fc36731a0516c3d0b56d0ca225362c5dd717c38d5745748b41c4d' 
  AND token = 'BPh7hTsXGAmVLZZwd2sL0TX4mBdjZe/IvFVkGM3c2h0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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