Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2fe8dc6375e6ce6e3bc635460ac545758a3214254a40f5706ce95fbdc48f12d' 
  AND token = 'lZa+Kdli5UWalGZ2J572W3yTX30apqlQ6dV+nUuAOw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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